Is it permissible for a traveler to lead the praying congregation, and when he concludes the prayer, they complete their prayer?

Question:
A man came from a journey and was praying the shortened prayer. When he entered the mosque, he found a group of people wanting to pray. He said to them, "I will lead you in prayer, but I will shorten it. When I conclude the prayer, stand up and complete your prayer." They refused this, and one of them stepped forward and led them in prayer. My question is: What is the ruling on the man's prayer in the manner described? Please guide us. May Allah reward you with good.

Answer:
The questioner mentioned that a traveler who shortens the prayer prays with the residents who are obligated to complete the prayer, and when he concludes the prayer after two units, they stand up and complete their prayer. This is the Sunnah. The Prophet (peace and blessings be upon him) prayed with the people of Makkah behind him during the Battle of the Conquest, and he said, “O people of Makkah, we are a traveling people, so complete your prayer for yourselves.” This is the Sunnah. As for the one who denied this to them, he is ignorant, and the one who refused to pray behind him did so as a result of ignorance of the Sunnah of the Messenger (peace and blessings be upon him). There is no harm in the one who shortens the prayer leading the residents, and when he concludes the prayer, they stand up and complete it for themselves. However, if the traveler who shortens the prayer prays behind a resident, it is obligatory for him to complete the prayer.